How do i use Displacement, Gloss and reflection textures in my material?

I’ve downloaded a pack from Poliigon( a site where i found some free textures) and in it (GrassShort001) were multiple textures including the albedo, normal and height map i beleive are called and others called: Disp, Gloss and Refl. I don t know how to use them in my landscape material. I’ve followed Mind Games Interactive’s tutorial on landscape materials and i got pretty nice results with the albedo, normal and height map. I’m afraid i won t be able to introduce the remaining 3 in the right place without messing sth up, as right now my material looks complicated (i ve used material functions , layer blends, tessellation and displacement to my material). Thanks in advance!